Whakaoti mō x
x=\frac{7y-z}{3}
Whakaoti mō y
y=\frac{3x+z}{7}
Tohaina
Kua tāruatia ki te papatopenga
15x+5z=35y
Me tāpiri te 35y ki ngā taha e rua. Ko te tau i tāpiria he kore ka hua koia tonu.
15x=35y-5z
Tangohia te 5z mai i ngā taha e rua.
\frac{15x}{15}=\frac{35y-5z}{15}
Whakawehea ngā taha e rua ki te 15.
x=\frac{35y-5z}{15}
Mā te whakawehe ki te 15 ka wetekia te whakareanga ki te 15.
x=\frac{7y-z}{3}
Whakawehe 35y-5z ki te 15.
-35y+5z=-15x
Tangohia te 15x mai i ngā taha e rua. Ko te tau i tango i te kore ka hua ko tōna korenga.
-35y=-15x-5z
Tangohia te 5z mai i ngā taha e rua.
\frac{-35y}{-35}=\frac{-15x-5z}{-35}
Whakawehea ngā taha e rua ki te -35.
y=\frac{-15x-5z}{-35}
Mā te whakawehe ki te -35 ka wetekia te whakareanga ki te -35.
y=\frac{3x+z}{7}
Whakawehe -15x-5z ki te -35.
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